Stocks making the biggest moves premarket: Chevron, United Airlines, Northrop Grumman, RH and more

Check out the companies making headlines in premarket trading: Oil stocks — Energy stocks climbed in premarket trading amid a jump in oil prices after Israel launched airstrikes against Iran without U.S. support, drawing concerns over the supply outlook from the oil-rich Persian Gulf. Chevron and Exxon Mobil rallied about 3% each, while ConocoPhillips jumped…